Lamp-shade gauge



March 10. ,1 925 1,529,320

H. D'OLIER, JR

LAMP SHADE GAUGE Filed March 1, 1921 MIN.

MIN

MAX.

wwmtoz Patented Mar. 10, 1925.

HENRY DOLIER, an, F BRII'JGEPO'RT, CONNECTICUT.

LAMP-SHADE GAUGE.

Application filed March 1, 1 9121. serial n8. @8354.

To all whom it may concern:

I Be it known that I, HENRYVDOLIER, Jr., a citizen of the United States,residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful fIrnpnovements inLainp- Shade Gauges, of which the following is a specification. k I I iMy invention relates to gaugesand, particularly to gauges for checkingthe, essential dimensions of the heelportion of illuminating devicessuch as lamp shades, reflectors, and illuminating glass. i

One object of my, invention isto provide a gauge that shall'check, at asingle setting or two settings for maximum and minimum sizesrespectively, the diameter of the top portion of a heel, the diameter ofthe neck of the heel, and the'height of the neck.

It is desirable to check the heel portions of illuminating devices nowused to enclose the modern filament lamp in order to determine quicklywhether ornot they may be fitted to, and supported from, standardcanopies. The heel portions vary in si'leby reason of the differences inthe thickness of the glass, and the differences in shrinkage and ingrinding. Such defects are more common in blown illuminating glassthanin pressed glass'or in metal. l

In a gauge constructed inacco'rdance with my invention, all theaforesaid essential dimensions of the heel portions, irrespective of thetype or contour are checked quickly and accurately.

Preferably, the gauge comprises a body, portion, a cross-head portionwhich is. made integral with, or fixedly connected to, the bodyportion,and pins which, are mounted, preferably vieldably, in thecross-headportions at different distances from the body portion. The body portionhas a maximum and a minimum limit marked on itnand serves to check thetop, diamete-rof the, shade, The pins not only checkthe diameterof theneck but also check thedistance,from thel screws top to the point atwhich the holder would make contact.

In the accompanying drawing, .Figure 1 is a front view-of a gaugeconstructed in accordance with :my; invention.

Fig.2 is a side view of the gauge'sliown in' Fig; 1.

Fig. 3 is aback view of a: portion. ofithe i gauge shown in 1,

head por ion ar fl term ned' in" 4 is a yiew, showing the application ofthe gauge to an illuminating device,

Fig5 1sanelevat1onal view showing the connection o standard. canopy.

iny inventioii wherein the pins are fixedly .mounted.

Referring tothe particular- 1y, to Figs. 1,2 and.3,.a gauge1,,c01nprises 'a cbody portion,;2,land acrossehead portion 3. Thecross-head port-ion 3 is preferably formed v integral,with the bodyportion 2, but, if, so desired, tlie,, two, portions maybeconnectedtogether in anysuitable posed at right an gles to the body,portion- 2, 1 carries two, pins.6 and 7 The pins project from thecross-head portion. and are parallel to the body portion of the gauge.Preferably, each of the. pins, is -morn ably mounted i th [body ,po tioand has a" po i c away, asshown, at. 8 and 9, to accommodate guide pins10 and 11. The guidepins 10 and 11, which arefixedly attached ,to thecross Thead, serve ,to limit ,the movernent of thetwo pins 6; and 7.Aspring-member 12,

/ which is connected, to. the cross-head, portion- ,a screwv .13,servesrto exert. a ,force .tending co-move the pinsfi and 7.,tothetposition I shown in Fig. l,of, the drawing. 7

F'g. 6 is aview showing a modificationof fan illuminating device to a vThe pin ,6 islooatedata distance w from the lower edgerof the bodyportion 2, and the lower end of the crossheadislocated a distance 3 fromthe lower edge of the body portion 2. The, pin '7 is locateda distance:0

from. the upper edge ofi the body portion,

, and the upper end of, the, cross-head portion isllocated, a distance yfrom thenpperedge of he b9dyiP9rti n-2-,J Th dis an es a arid 1 inthegauge shown, aregre'ater than the distances a1. anclg f, thepinfi ;-serv ing;t 0 indicat e m ximum allowabl dimen on of th e l p r on anthepinYs Iv ng indic t h n m m. a abl d mensio s.

as will be set forth hereinafterl I. T-h.e,ma;xi-

mum andvm nimu dimensibnstitheross- I .rdance with the llmenslons ofmean c a .lli Ch tkirigE-the. nine een in he portion of an illuminatingdevice such as shown in Fig. of the drawing, it is essential to gaugethe top diameter indicated by the distance a, the diameter. of the neckportion indicated by thedistance 8, and the height of the neck portionto the horizontal line of contact as indicated by the distance R.

It is essential to check such dimensions of. the heel portion in orderto fit the said heel portion .14. in thecanopy 15, and secure it inposition by meansofthe screw s21, one

I only of which is shown on the drawing.

. The. dimensions of the heel portion of an illuminating device arechecked by placing the gauge in position on'the top, as

1 shown Jn Fig. 4 of the drawing, the lower corner B of the cross-headportionwengaging the side of the shade. At the .edge C of the heel, itis" determined by the marks et gwhether or not the top diameter. of: the.illuminating device is within the allowable maximum and minimumdimensions. The

pin denters the neck of .the shade and should touch the neck when thepoint Bot the cross-head is in engagement with the side. If the pin 6does not. touch the neck,

ameter is too large or the'height'ot the neck is too small. Inthe lattercase, the posil the diameter ot'. the neck portion is too small,l andifthe pin is so forced out against the spring member 12 as to prevent thepoint B. from touching. the-side, the dition 0t the gauge, is reversedand the body 'portionQ is plac'ed with the marks .5 next to the topofthe shade. The above process is repeated and the position of'the pin 7dey termines whether or not the heel portion comes within the allowableminimum dimensions.

' Referring to Fig. 6 of'the drawing, a. simplifiedgauge is shownwherein pins 16 and 17 are fixedlymounted in a crossrhead portion '18.The cross-head portion 18 is device., K p

From,.the above description, 1t 1s apattached to a body portion 19 inany suitable manner. The gaugeflshown .in Fig' 6 is somewhat simpler inconstruction than the gauge shown 1n F1gs. l to 5, lnClLlSlVG, and

is operated in a similar manner to check illuminating the essentialdimensions of an parent the disclosed gauge checks the essentialdimensionsof a heel in a simple. and eflicient manner. Moreover, thegauge is simple in construction and reliable in open ,ELlJlOIl.Althoughtwo settings of the gauge :inay be required to check theessential dimensions of the heel portion of an illuminating..deyice,itis possible, in many cases,

tingofthe gauge.

to check such dimensions .by a single set- Modificationsin the gauge,and in the ar- "rangement and *locationiof parts may be made withinthe'f spirit and scope of my "invention, and ".siich modifications areinclaims.

WVhat I claim is:

1'. Ina gauge, the combination comprising a body portion, a cross-headportion joined tended to be covered by the appended to the body portion,and two pins mounted on the cross-head at predetermined and slightlydifferent distances from the body 'ment relative to the cross-head, andmeans for exerting'a force tending to move sald pins to initialposition. p

4:. In a gauge for checking theheel portion of an illuminating device,the combina- 'tion comprising a body portion having two sets of maximumand minimum markings thereon, a cross-head attached to the body portion,and yieldable pins mounted in the. cross-head at different distancesfrom thebody portion.

5. In a gauge illuminating device, the diameter of the neck of the heeland the height of the neck curve, the combination comprising a bodyportion, across-head portion, a pin mounted in the crossrhead portionand having limited movement relative to the cross-head portion, andmeans for exerting a force tending-to move the pin to initial position.

6. In a gauge for checking an illuminating device,the combinationcomprising a checking the top of the device, a cross-head attached tothe body portion, and a pin mounted in the cross head, said pin combinedwith the cross-head serving to check the diameterofthe neck of the heeland the height of the neck curve at the same time asthe diameter of thetop of the device is checked. y r

7, In a gauge for checking an illuminating device, the combinationcomprising a body portion having markings thereon for checking the top Iofthe device, a cross head attached to' the body. portion, a pin mountedin the cross-head and having limited movementrelativeto the cross-head,and means forexerting a force tending to move the'pin to initialposition, said .p-in combined with the cross-head and the body. portionserving to check thediameterof the neck of the heel andthe heightof theneck curve. 1 I

8. In a gauge forehecking theheel porfor checking the top of an bodyportion having markings thereon for 1,529,32o V a .8

tion of an illuminating device, the combinaof the neck curve, said bodyportion co: tion comprising a body portion having operating with saiddifferent means to check markings thereon for checking the top of theheel portion at a single setting of the the heel portion, means mountedon and 00-* gauge.

operating With said body portion for check- In testimony whereof, Ihereto aflix my ing the diameter of the neck portion, and signature.

means supported from and cooperating With said body portion for checkingthe height HENRY DOLIER, JR.

